Emerson Fisher Fieldvue DVC6020f User Manual

DVC6000f Series
March 2006
7-4
 Device State
Device State (RS_STATE [7]) indicates the state of
the function blocks. Four states are possible:
 Initialization—The instrument enters this state
upon restart or failure. The function blocks are in
the IMan mode. During the initialization state, all
unreported function block alarms are automatically
confirmed and acknowledged. Once the instrument
is considered operational, block execution is
scheduled and the instrument state moves to
Online.
 Online—The instrument will be in this state if it
is operational. The function blocks are initially in
the Auto mode, but can be changed to a higher
level mode.
 Standby—The instrument enters this state if the
resource block mode is Out of Service (OOS). In
this state all function block modes are forced to Out
of Service. The transducer block mode is not
affected. When the resource block mode is
changed to Auto, the instrument state moves to
Online.
 Failure— The instrument moves to this state
whenever a hardware or memory failure is detected
which would prevent reliable operation. All function
blocks and the transducer block modes are Out of
Service.
 Fault State
Fault State (FAULT_STATE [28]), when active,
indicates a loss of communication to an output block,
a fault promoted to an output block, or loss of a
physical contact. If the fault state is active, the output
function blocks perform their FSTATE [28] actions.
Selecting Fault State enables the ability to manually
set and clear the fault state. Setting Set FState
(SET_FSTATE [29]) to SET manually places the
instrument in the fault state. Setting Clear FState
(CLR_FSTATE [30]) to CLEAR clears the device fault
state, if no faults are currently active. You can test the
actions the output blocks will perform by manually
setting fault state active.
 Write Lock
Write Lock (WRITE_LOCK [34])
determines if writes
are permissible to other device parameters. The Soft
Write Lock feature must be selected to be able to use
Write Lock (see Selecting Features). When Write Lock
is set to Locked, no writes are permitted to any
parameters within the device except to set Write Lock
to Not Locked. When locked, the block functions
normally, updating inputs and outputs and executing
algorithms. When Write Lock is set to Not Locked, the
Write Alarm alert is active.
7

Emerson Fisher Fieldvue DVC6020f Specifications

General

Brand	Emerson
Model	Fisher Fieldvue DVC6020f
Category	Controller
Language	English